Valve for gas-producers.



PATENTED JAN. 2, 1906.

I. G. HOBART.

VALVE FOR GAS PRODUCERS.

APPLICATION FILED MAY 8, 1905.

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UNITED STATES PATENT OFFICE.

FRANKLIN G. HOBART, OF BELOIT, WISCONSIN, ASSIGNOR TO FAIR- BANKS MORSE& COMPANY, OF CHICAGO, ILLINOIS, A CORPORA- TION OF ILLINOIS.

Specification of Letters Patent.

I Patented Jan. 2, 1906.

Application filed May 8, 1905. Serial No. 259,426.

To all whom it may concern: 7

Be it known that I, FRANKLIN G. HOBART, a citizen of the United States,residing at Beloit, in the county of Rock and State of VVisco'nsin, haveinvented certain new and useful Improvements in Valves forGas-Producers, of which the following is a specification, referencebeing had therein to the accompany- 1ng drawings.

My invention relates to new and useful improvements in valves forgas-producers; and it consists in the'construction and arran ment ofparts thereof, as will be more fu 1y hereinafter described, and pointedout in the claims.

The object of my invention is to form a valve to be placed between thegas producer or generator and scrubber or other part of the apparatuswhich will easily establish communication from the generator either tothe atmosphere or to the scrubber or other part of the apparatus, as maybe desired, and which can be ground on its seat to make it tight withoutremoval or disconnection of any parts and which will automaticallyestablish communication from the generator directly to the atmosphere incase of an explosion Another object of my invention is to form thisvalve-casing as a pocket for collecting dust from the gas passingtherethrough.

In the drawings, Figure 1 is a vertlcal central longitudinal sectionthrough the casing,

showing the valves, stem, and pivot in elevation. Fig. 2 is a transversevertical section on the line x a; of Fig. 1, showing the valves, stem,weight, and fulcrum in elevation.

As shown in the drawings, the casing N is constructed to form thechambers 1, open to the atmosphere; 2, an inlet-chamber open to thegenerator, and 3 open to the scrubber or other part of the apparatus.The walls 4 and 5, separating the inlet-chamber from the twooutlet-chambers 1 and 3, I provide with the alined apertures al). In theoutlet-chamhers I place the opposed valves A B, mounted on a common stemE and arranged to seat in the openings a b, respectively. In both topand bottom of the casing I provide the openings d c, of sufiicient sizefor the insertion of the valves. These openings I close by the removableplates F C, respectively.

The stem or spindle E 1s extended through the chamber 1 and slidinglythrough an opening in the cover F, where it terminates in ascrew-threaded portion of reduced diameter. On this reduced portion isfitted the collar G, secured by the nut G. The plate F carries astandard F, preferably cast integral therewith. On this standard as afulcrum is mounted the lever J, bifurcated to engage the end of thestandard and pivoted therein by means of the pin K. The long arm of thelever J carries the weight J and extends over and normally rests uponthe nut G on the stem E. By this construction the weight of the lever,the weight of the valves and spindle, and the atmospheric pressure tendto seat the valve A and unseat the valve B, and it is evident thatwhenever there is an explosion in the generating system or from anycause the pressure therein becomes greater than the weights andatmospheric pressure the valve A will be unseated and communication willbe opened directly to the atmosphere from the generator. The valve Athus acts as a safety-valve. The bifurcation of the lever J forms twoshort arms H H, bent substantially at right angles, so that when thelever is revolved upon its axis it will rest in the position shown inthe dotted lines in Fig. 2, and the arms H Hwill engage the collar G andraise the spindle until the valve B is seated. The valve B thus acts tocut ofi communication between the generator and the scrubber or otherpart of the apparatus. By placing the transverse wall 6 in the chamber 3the current of gas passing down around the valve B is caused to passupwardly again and over this wall. The portion M of the chamber 3 belowthe valve-opening thus acts as a collectingpocket for a considerableamount of the dust contained in the gas, and the dust deposited inthe-pocket M may be readily removed through the o ening c. To facilitatethe adjustment and c caning of the valves, I also provide the hand-holeL, covered by the plate L.

It will be noted that there is no attachment whatever between thevalve-stem outside of the valve and the operating-lever; but the valveis left free, so that it can be turned by a wrench or other means forthe purpose of grinding the valve on either of its seats, this being animportant feature of theinvention.

From the construction it will be seen that the weighted lever may beused to tap the valve-spindle in case the valve B should become gummedand stick in its seat, and by reversing the lever it may be used to pryup the spindle in case the valve A should stick. As valves ingas-producers very often become fouled and stick in their seats, this isa very important feature of my invention.

What I claim, and desire to secure by Letters Patent, is

1. In a valve for a gas-producer, the combination with a chamberedcasing having an inlet and opposed outlet-openings, of valves seatingfrom the outside adapted to close said outlets, a stem on which saidvalves are mounted, one end thereof being extended loosely through saidcasing, and a weight pivoted on the outside of said casing and adaptedto normally rest on the end of said valve-stem, for the purposedescribed.

2. In a valve for a gas-producer, the combination with a casing having achamber open to the atmosphere, a chamber forming a pocket forcollecting dust and open to the scrubber or other part of the apparatus,and an intermediate inlet-chamber open to the generator, the dividingwalls having opposed openings, of valves adapted to seat on the outersides of said openings, a stem on which said valves are mounted havingone end extended and passing loosely through the casing, and a weightpivoted on the outside of said casing and adapted to rest on the end ofsaid stem to normally close the valve between the inlet-chamber and thechamber 0 en to the atmosphere.

3. A va ve consisting of a valve-casing, a vertically removable stemextending outside of said casing, the movable elements of the valvemounted thereon, a lever pivoted on said casing and arranged to hold thevalve closed in one extreme position and open at its opposite extremeposition by gravity, substantially as described.

4. The mechanism for operating a vertical spindle-valve consisting of aweighted lever pivoted to the valve-casing and lying approximatelyhorizontal in both extreme positions and engaging said valve spindle andstem, said lever resting on top of said valvestem in one extremeposition with said resting-point falling between the pivot and thecenter of gravity of said lever, and in its opposite position with theweight-arm resting under a collar or head in said valve-stem with thepivot falling between said resting-point and said center of gravity,whereby the weight of the lever acts to hold the valve down in thefirst-mentioned position and up in the last-mentioned position,substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANKLIN G. HOBART.

Witnesses:

P. O. BnooKs, GEO. B. INGERSOLL.

